Sliding pivot window structure



June 17, 1958 J. RlNGLE m SLIDING PIVOT wmnow STRUCTURE 2 Sheets-Sheet 1 Filed Dec. 19, 1955 INVENTOR illrall; I'll! JOHN R/NGLE E ATTORNEYS J. RINGLE Ill SLIDING PIVOT WINDOW STRUCTURE June 17, 1958 2 Sheets-Sheet 2 Filed Dec. 19, 1956 l N VENTOR JOHN R/NGLE .ZH

BY jam emu ATTORNEYS United States Patent SLIDING PIVOT WINDOW STRUCTURE John Ringle 11], Wausau, Wis., assignor to MarmebCorporation, Wausau, Wis, a corporation of Wisconsin Application December 19, 1956, Serial No. 629,399

4 Claims. (Cl. 189-67) This invention relates to a sliding pivot type window or ventilator and more particularly the invention relates-to the sliding shoe and shoe mounting arrangementfor a sliding pivot type window.

The general type of window to which the invention relates consists of a frame, a sash slidably mounted at one end in said frame and a linkage forming a pivotal mounting of the sash with respect to the frame, the linkage pivotally engaging the sash intermediate the ends. In such a window one of the principal problems has been in the provision of a simple and economical mounting for the shoes which slidably engage the frame. Prior practice has been to form the mounting for the shoe as a separate attachment and to fix that attachment to the sash. This prior practice has required a part separate from the sash and the extra step of fixing the part to the sash.

The present invention is directed to eliminating the necessity of the extra part and consists principally in forming the shoe mount as an integral part of the sash. The invention further consists of a novel arrangement for spring biasing the shoe away from the sash into engagement with the frame. In accordance with the invention, the lower rail of the sash is formed as an extrusion having as an integral part thereof an elongated C-shaped shoe mounting. A saddle and spring are located in the C-shaped mounting so that the spring engages the shoe to urge it outwardly into engagement with the frame.

It is therefore an object of the invention to form a shoe mount for a sliding pivot sash, the shoe mount being extruded integrally with the lower rail of the sash.

A further object of the invention is to provide the means for locating the friction shoe in the mounting with a spring biasing the shoe outwardly.

It is still another object of the invention to provide a friction shoe composed of a metallic pin and backing supporting a nylon friction member which directly engages the frame. These and other objects will become more readily apparent from the following detailed description of the invention taken in conjunction with the accompanying drawings, in which:

Fig. 1 is a fragmentary perspective view showing the organization of the frame and sash,

Fig. 2 is a front elevational view of the window,

Fig. 3 is a cross sectional view taken along the lines 33 of Fig. 2,

Fig. 4 is a cross sectional view similar to that of Fig. 3 showing the window in open position,

Fig. 5 is an exploded view in perspective of the pivotal link mechanism,

Fig. 6 is an exploded view in perspective of the shoe mounting arrangement,

Fig. 7 is a cross sectional view of the shoe and mounting mechanism,

Fig. 8 is a cross sectional view taken along lines 8-8 of Fig. 7,

Fig. 9 is a perspective view of the shoe,

2,839,166 Patented June 17,

Fig. 10 is a cross sectional view through the center 0 the shoe, and

Fig. 11 is a cross sectional view taken along lines 11--11 of Fig. 10.

The window is indicated generally at 20 and consists of a frame 22 having frame jamb bars 24 and 26 joined by header and sill 28 and 39, respectively.

Each frame jamb bar is an extruded section formed with a channel 32 which receives a sliding pivot shoe 34 and the pivot hinge mechanism 36.

The pivot hinge mechanism consists of a hinge arm or link 38 pivoted at 49 to a frame hinge bracket 42 which is fixed by screws 44 to the frame. The other end of the hinge arm 38 is pivoted at 46 to a sash hinge bracket 48 which is fixed to the sash 50 by screws 52.

It is to be understood that the sash mounting described for one side of the sash is identical with the other side of the sash. v

The'sash consists of upper and lower rails 54 and 56 joined by sash stiles 58 and 60 to which the sash hinge brackets are fixed. A latch 62 is afiixed to upper sash rail 54- and has a bolt 64 which is engageable with a depending flange 66 on the header 28 to maintain the sash in locked engagement with the frame.

The manner in which the sliding shoe 34 is mounted in the sash is best illustrated by reference to Figs. 6-8. Fig. 8 shows a cross sectional view of sash rail 56 and its engagement with sill 30 of the frame. The sash rail consists of a horizontal member 68 which receives the window pane and a vertical member 70. The shoe mount per se is indicated at 72 and is C-shaped in cross section, being extruded integrally with the jamb bar 56.

Fig. 6 shows the members which are assembled in the C-shaped portion of the jamb bar, and Fig. 7 shows these members in assembled condition.

The mounting mechanism consists of a saddle 74 having at one end a ring-shaped abutment 76 which butts up against the end of C-shaped member 72 as shown in Fig. 7. At the other end of the saddle is an internally threaded ring 78 having an outside diameter slightly less than the inside diameter of C-shaped section 72 so that it can be slid inside the C-shaped section 72. A bar 80 is joined to the two rings by flanges 82 and 84. The flanges 82 and 84 maintain the cross bar 89 protruding outwardly from G-shape-d section 72 as shown in Fig. 8.

A helical compression spring 86 is normally disposed between ring-shaped members 76 and 78 and, at one end, engages the free end of a pin 90 fixedly connected to the shoe 34. The other end of the spring 36 is engaged by a compression rivet 94 which is forced into engagement with the spring by a bolt 96 threaded into the internal threads of ring 78. By rotating the bolt 96, the pressure of spring 86 bearing against the shoe 34 can be regulated.

The details of the shoe 34 are illustrated in Figs. 9, l0 and 11. In the preferred form of the invention, the friction block 92 is preferably of nylon and has a backing of a metallic plate 9S. The plate 98 is provided with lateral tabs 100 and H92 which are bent around to be seated in notches 104 and H56, respectively. The bottom of each notch has a shoulder 193 about which the tabs are secured.

The pin 90 is metallic and is fixed to the plate 98 by welding, peening or the like. This manner of constructing the shoe 34 provides the frictional sliding characteristics of the nylon block or foot 92, with the desirable rugged constructional characteristics of the metal pin and plate.

In a general manner, while there has been disclosed in the above description, what is deemed to be the most practical and efficient embodiment of the invention, it should be well understood that the invention is not limited to such embodiment as there might be changes made in the arrangement, disposition and form of the parts without departing from the principle of the present invention as comprehended within the scope of the accompanying claims.

I claim: I

1. In a sliding pivot window structure having a sash movable with respect to a frame, a sliding shoe mounting arrangement comprising, an integral bottom rail extrusion having, in cross section, a C-shaped mount extending along the length of said rail a saddle having a ring located in said mount and a projection engaging the end of said mount, a shoe engaging a channel in a frame jamb, having a pivot pin located in said C-shaped portion, and spring means urging said shoe, in cooperation with said saddle, into contact with said frame jamb.

'2. In a window structure, a horizontal sash rail and sliding shoe construction comprising, a C-shapedmount extruded integrally with said bottom rail, a saddle having airing located in said mount and a projection engaging the end of said mount, a bar joining said ring and projection, said bar being located in the slot formed by the terminalv edges ofsaid C-shapedmount, said sliding shoe having a pivot shaft slidably located in said mount, and a helical spring located in said mount between said ring and said shoe to urge said shoe outwardly away from said rail.

3. The combination according to claim 2 further corn prising, internal threads formed on said ring, and a screw threaded in said ring and acting on said spring for varying the compression on said spring.

4. The combination according to claim 3 further com prising, a compression rivet having a shank portion slidable in said spring, and ahead portion of greater diameter than said spring engaging the end of said screw for stabilizing the action'of said screw on said spring.

References Cited in the file of this patent UNITED STATES PATENTS 2,109,973 Moseley Mar. 1, 1938 2,268,802 Montgomery July 23, 1941'? 2,293,536 Fenn Aug. .18, 1942 2,751,272 Hutzelrnan June 19, 1956 

